I don't have, or at present plan to have, any of the new P&P accessories, so I haven't been following the operational aspects of these items. I have plenty of the older versions for now. However, I know that different accessories often operate best at different voltages, so for best operation it is preferable for each accessory to have its own variable power supply. I have about five old small starter-set transformers, and a ZW, all of which can be used to power individual accessories at their optimum voltages (or that's the idea, anyway).
I'm curious to know how these various new P&P accessories are controlled to achieve their optimum individual power levels.